Electric bell.



PATENTED NOV. 19, 1907.

E.'J. HEBNBY.

ELECTRIC BELL. APPLIOTION FILED 1113.12, 190e.

wia/eases.-

. moved; Fig. 2 is a vertical section through the middle of theinstrument.

' 'The invention' further relates to certain sists in means foradjusting the gong or bell the striker and the gong, it being obviousNXTED STATES A*PATENT OFFICE HENRY J. HEENEY, OF BOSTON,)'IASSACHUSETTS, ASSIGNOR TO HOLTZER CABOT ELECTRIC COMPANY. ACORPORATION OF MASSACHUSETTS.

ELECTRIC BELL.

No.l 871,168. Specification of Letters Patent. Patented Now. 19, 1907.

Application filed Februarv 12. 1906- Serial No, 300591.

To vall A'whom 'it may concern: 1 the member b upon the-terminalconductors Be it known that I, HENRY J. HEENEY, to make a water-tightfit. a citizen of the United States, residing in l The bell c issupported 'outside of the Boston, in the county of Suffolk and State lcasing 1adjacent to a diaphragm d which is of Massachusetts, haveinvented an Improveherein shown as a piece of thin sheet metal; mentinElectric Bells, of which the follow- I preferably corrugated, whichcompletely ing description, in connection with the acj closes an openingat the bottom ofthe ca'se companying drawings, is a specification, likel a. The striker e, which is wholly inclose'd letters on the drawingsrepresenting like within the casing, is arranged to strike parts. ldirectly on the diaphragm t irough which The present invention relatesto an electhe blow is imparted to the bell c, the bell tric bell,the purose of the invention being being in the iield of impact of the striker.to obtain a bell o this kind for out-door use, It is desirable,therefore, that the distance or for use on'ship-board, in which thevital' between the bell and the diaphragm should parts, that is to say,the electro-magnets, contacts, &o., will be thoroughly inclosed in aWater roof case.

that the-diaphragm may be sufficiently near to the b'ell not tointerfere with the fdrce of details of construction 'and arrangement ofthe electro-magnet, armature, cc., which Will be more Jully hereinafterdescribed.

A further feature of the invention consamle time, suiliciently far fromthe bell not to'interfere with the vibrations thereof.

' As herein shown, the bell c is supported in a member c2 which projectsdownward from the bottom of the case, having a supporting flange c3secured to the bottom of the case 'byV means of screws c.` Intheiuconstruction shown, the member 'c2 is in the form of an yinclosinghood, so as to aid in the' protection of the bell itself.

For purposes of adjustment, the bell is shown' as provided with anopening c5,l through wlnch extends a supportingscrew' c which coperateswith a clamping screw or nut c7 alt the outside to hold the bell inposition. The opening ci is, made slightl o ut of alinement with theaxis of the bel so that the bell thus supported is in the nature of aneccentric, it being obvious, therefore, that by loosening the nut c7 andturning the bell on the screw c, the periph- -ery thereof'which receivesthe blow may be adjusted in itsposition relative tothe diaphragm d. Thebell may beoperated either proper with relation to a diaphragm whichorms a tight inclsure of the case between that the gong should be nearenough to the diaphragm to receive the blow, and, at the same time, nottoo near to interfere with the sound vibra-tions.

Figure 1 is a front elevation, partly in section, of a bell embodyingthe invention, with the cover of `the inclosing case re- Referring toFig. l, the operating 1nechanism for, the bell is completely inclosed'in a Water-tight casing af, the said casing being shown as a-box open atthe front and' provided with an inclosing cover a2 with an interposedwasher a3, so that the said cover toafford a watertight seal. The caseis also provided with an opening at 'the top for the terminal conductors2 and 3 which are j shown as passing through openings in a block ofyielding material b, such, for example, as rubber, which is contained ina tube or nipple b2 having an external screw thread forinsertion intothe opening in the' topvof the'case. The tube or nipple bz also containsa compressing member b3 which can be-forced into contact with the part bby meansof a coupling nut b, thus compressing mechanism which operatesthe striker c being wholly inclosed in the case a.

As herein shown, the case contains an electro-inag1iet f arranged toattract an armature g provided with a restoring spring g2, the saidarmature g being of-suihcient length to extend across the pole pieces ofthe oted at c?, and connected at e* with the striker e. lThe point ofconnection between beeasily and delicately adjusted inforder the blowgiven by the striker, and, at theas a single stri-ker' or as a vibrator,the' electro-magnetj, and being connected at the end opposite its pivotg with anaim .e2 piv.

supported in one ot the upright-s i2 of the 2 sri,

the armature g and lthe arm @Vis relatively near to the pivotal supporte3, so that a relatively small movement of the armature g will produce asurlicient movement of the striker e to give a good hard blow.Furthermore, I this arrangement is such that the armature g, having sosmal-l a movement, lies close to the cores of the electro-magnet, thusbeingin a strong magnetic .eld This construction renders the belladaptable for use with currents having a wide variation of voltage. y

vIn order to, cushion the recoil ot the striker e in response to theaction of the spring g2, the said striker is arranged to cooperateA witha spring h, herein shown as rsecured by means oi a nut h2 on a screw h3me member fi', which uprights afford the upports for the magnet and forthe armature and arm e2, This spring h is engaged by gprojection e5 fromthe side of the striker l n the u ward movement of said striker. f thebe l is to be used as a vibrator, a circuit breaker is employed,saidcircuit breaker being herein shown as consisting of an adjustablestationary contact It' which cooperates with a movable contact m whichis arranged to be acted upon by the projection e5 in the downwardmovement of the striker e. F or convenience in construction, the saidmember m may consist of an extension of the spring Al1, the entirespring h, ym, being separated bv insulating material'n'i2 from thesupporting member-1.

The supporting member 1' is provided at the base with an opening i3,which constitutes a guide for the striker c, and the diaphragm o' isclamped to the bottom of the case by means ot said supporting frame. The'said trame is held in place by screws i* inserted through the underwall of the case of.' l rl`he under part of the frame i. is hollowed IAout over the diaphragm, as indicated at fi,

so as not to interfere with the tree operation thereof, but the guideportion for the striker is extended into contactwith the diaphragm,'thereby preventing the said diaphragm from setting up vibrations afterthe blow has been struck.

1. in an electric bell, the combination with au electro-magnetg anarmature, and a striker operated thereby; of an inclosed casing tor saidelectro magnet, armature and striker; a gong supported outside oi thecasing in the lield of impact ot said striker; a diaphragm forming apart ol the wall of said casing, and heilig interposed between saidstriker and said gong; and means for prel1 venting said diaphragm from.vibrating.

2. in an electric bell. the combination with an electro-magnet and alongitudinally `j movable striker operated thereby; of a cas ing tocontain said electro magnet and l striker; a cover for said casing; aWasher interposed between said cover and said casing.

to constitute a water-tight seal; electric conductors to energize thesaid electro magnet; a flexible member provided With openings for saidconductors; means for compressing said flexible member to hermeticallyseal the same around said conductors; a gong outside of the casing inthe path of impact of said striker; a diaphragm forming part of the wallof the casing and interposed between said striker and saidv gong; andmeans for preventingsaid diaphragm from vibrating.

3. In an electric bell, the combination with an electrodnagnet, anarmature and a striker operated thereby; of an inclosed casing for saidparts; a gong supported outside of the casing in the lield of impact ofsaid striker a diaphragm forming a part of the' wall of said casing andbeing interposed between said striker and said gong 3 means Jforpreventing said diaphragm from vibrating; and means for adjusting theposition of said gong with relation to said diaphragm.

4. In an electric bell, the combination with an inclosed case rovidedwith a diaphragm in one wall; o striking mechanism inclosed in saidcase; a hood-shaped supporting member connected with the wall of saidcase of which said diaphragm forms a part; a clamping member supportedin said supH porting member; and a circular gong rovided with an openingslightly out of a inement with its center, said supporting memberextending through said opening in said gOHg.

operating means contained thereinja diaphragm forming part ot the wallof said casing; a fixed part within the casing lying in contact with thediaphragm near the middle thereof; and a bell outside the casing closeto, but not in Contact with, the diaphragm. 6. In an electric bell, the.combination with a .hermetically'sealed casing; ot' an electro-magnetcontained therein; a reciprocating striker also in said casing; an armhaving a stationary pivotal support at one end, and being pivotallyconnected with said striker at the other end; a pivotally supportedarmature for said electro magnet connected with said pivotally supportedarm; a diaphragm constituting an inclosingI part ot' said casing, andbeing in the path ol the said striker: and a bell outside of the casing,and in the field of impact ol' said striker' to receive blows therefromthrough said striker.-

ln testimony whereof, I have signed my name to this specification inthel present-c ol' two subscribing witnesses.

roo

